Before you buy a new HDTV set, you must be familiar with the basic technology and function. (How else do you want to be able to answer the questions presented in Part 1?).
Note The first step to know the basics you need to know is the basic structure of HDTV, how it works, and some knowledge to understand the future of HDTV, so you do not buy yesterday's technology today!
What is HDTV?
HD stands for "high definition", and is the newTelevision standards. HDTV is actually part of the digital television (DTV) specifications of the Advanced Television Systems Committee (ATSC) led. The ATSC has eighteen different transmission formats, six of which are defined as "high definition", because they are an incredible growth and progress towards the resolution of the quality of a television program.
HDTV has 1125 lines of horizontal resolution over 525 lines in NTSC analog televisionSignals. Sun HDTV brings more than five times the video information from the previous NTSC analog TV signals. Simply put, there is more information in a range similar pattern was shown to be "higher resolution" or more detail in picture quality.
A short history of HDTV
Although HDTV has a very short history, has been influential in the conversion of the digital home entertainment space. The credit goes to the satellite TV service provider, theFirst he created the demand for HDTV.
It all started nearly 15 years ago, in 1987, as the FCC (Federal Communications Commission) has a rule that says that HDTV will be backward compatible with existing NTSC standard was on duty. Another way of thinking is that to be able to receive any new signal format and color standard was displayed correctly on older and older TV series in black and white.
But later, in 1990, General InstrumentCorporation in an all-digital transmission and standard transmission. By the end of 1990 there were four serious contenders have emerged in the United States: ATRC, Zenith HDTV and AT & T, and MIT. These organizations have made their entry into the HDTV digital market. It did not take long to realize that there are standards established a friendly and too expensive for developing a system from scratch. In 1993 an alliance was formed between the participants: AT & T, General Electric, MIT,Phillips, Sarnoff, Thomson, and Zenith.
Their mutually beneficial agreement for a coalition. They were the best features of each of their first four-HDTV system design and develop a common standard for HDTV transmission system. Have been successfully tested in 1995 and the FCC has set as the HDTV standard that we have today.
Next - What exactly is different from the old analog HDTV system and what it does?
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